/// <reference types="node" />
import { Component } from 'react';
interface propTypes {
    /** 倒计时时间，毫秒 */
    time: number | string;
    /** 文本内容 */
    text: string;
    /** 倒计时结束文本*/
    finishText?: string;
    /** 倒计时进行回调，返回剩余时间 */
    onTick?: (a: number | string) => any;
    /** 倒计时完成回调 */
    onComplete?: Function;
}
interface stateType {
    timeLeft: number;
}
interface defaultType {
    time: number;
}
declare class IotCountdown extends Component<propTypes, stateType> {
    timer: null | NodeJS.Timeout;
    static defaultProps: defaultType;
    constructor(props: any);
    tick(): void;
    componentDidMount(): void;
    componentWillUnmount(): void;
    render(): JSX.Element;
}
export default IotCountdown;